With an elastic top, the Modern Mox® is easy to slip on and off, while still fitting snug to your child's foot. Each shoe is lined with cotton to keep the foot dry and warm. Sizes 4 and up have hard soles for the new walking babe in your home! To ensure ordering a proper size, please measure your child’s foot prior to ordering. We recommend adding 1/2" to your child’s foot measurement for growing room. Sweet N Swag all started with a goal to DO GOOD and every pair of shoes purchased continue to help us do just that.